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Next: <a href="omp_005fset_005fnum_005fteams.html" accesskey="n" rel="next"><code class="code">omp_set_num_teams</code> &ndash; Set upper teams limit for teams construct</a>, Previous: <a href="omp_005fset_005fmax_005factive_005flevels.html" accesskey="p" rel="prev"><code class="code">omp_set_max_active_levels</code> &ndash; Limits the number of active parallel regions</a>, Up: <a href="Runtime-Library-Routines.html" accesskey="u" rel="up">OpenMP Runtime Library Routines</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Library-Index.html" title="Index" rel="index">Index</a>]</p>
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<h3 class="section" id="omp_005fset_005fnested-_002d_002d-Enable_002fdisable-nested-parallel-regions"><span>3.32 <code class="code">omp_set_nested</code> &ndash; Enable/disable nested parallel regions<a class="copiable-link" href="#omp_005fset_005fnested-_002d_002d-Enable_002fdisable-nested-parallel-regions"> &para;</a></span></h3>
<dl class="table">
<dt><em class="emph">Description</em>:</dt>
<dd><p>Enable or disable nested parallel regions, i.e., whether team members
are allowed to create new teams.  The function takes the language-specific
equivalent of <code class="code">true</code> and <code class="code">false</code>, where <code class="code">true</code> enables 
dynamic adjustment of team sizes and <code class="code">false</code> disables it.
</p>
<p>Enabling nested parallel regions will also set the maximum number of
active nested regions to the maximum supported.  Disabling nested parallel
regions will set the maximum number of active nested regions to one.
</p>
</dd>
<dt><em class="emph">C/C++</em>:</dt>
<dd><table class="multitable">
<tbody><tr><td width="20%"><em class="emph">Prototype</em>:</td><td width="80%"><code class="code">void omp_set_nested(int nested);</code></td></tr>
</tbody>
</table>

</dd>
<dt><em class="emph">Fortran</em>:</dt>
<dd><table class="multitable">
<tbody><tr><td width="20%"><em class="emph">Interface</em>:</td><td width="80%"><code class="code">subroutine omp_set_nested(nested)</code></td></tr>
<tr><td width="20%"></td><td width="80%"><code class="code">logical, intent(in) :: nested</code></td></tr>
</tbody>
</table>

</dd>
<dt><em class="emph">See also</em>:</dt>
<dd><p><a class="ref" href="omp_005fget_005fnested.html"><code class="code">omp_get_nested</code> &ndash; Nested parallel regions</a>, <a class="ref" href="omp_005fset_005fmax_005factive_005flevels.html"><code class="code">omp_set_max_active_levels</code> &ndash; Limits the number of active parallel regions</a>,
<a class="ref" href="OMP_005fMAX_005fACTIVE_005fLEVELS.html"><code class="env">OMP_MAX_ACTIVE_LEVELS</code> &ndash; Set the maximum number of nested parallel regions</a>, <a class="ref" href="OMP_005fNESTED.html"><code class="env">OMP_NESTED</code> &ndash; Nested parallel regions</a>
</p>
</dd>
<dt><em class="emph">Reference</em>:</dt>
<dd><p><a class="uref" href="https://www.openmp.org">OpenMP specification v4.5</a>, Section 3.2.10.
</p></dd>
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